Index-tab.



H. B. BURUKHART.

INDEX TAB.

APPLICATION FILED ooms, 19.01.

1,079,209. Patented Nov. 18, 1913.

EMJYVRY B. BURCKHART, OF CHCAGO, ILLINOIS, ASSIGNOR TO YAUJMAN 'c ERBE W' YORK.

INDEX-TAB Spcclcnton of Letters Patent.

.Application lled October 25, 1907. Sc1ia1N0.399,094.

.. unis. lum;l invtrntctl u curtain nnw unil untiliul i l l lll? 'time it was necessary to have ldien large clips are required, the weight of the metal becomes quite an important element, as it will be readily noted that the placing of twenty-six or more metal clips on the leaves of a book increases considerably its weight' and bulkiness. For this reason, I pret'er to use another' form of the compression band or lock shown in Fig. 6. In this forni, a portion of one side is cut away, leaving projecting ears 27-28 to serve in place of one side. I find that these eai's possess sufficient gripijiing force to hold the tab securely in place, while at the same time the weight of the device itself is materially decreased.

The compression band is in itself practically a spring clip having members iii-Q2 by the adjustment of which the gripping force of the tab as a whole may be regulated. It will be noted that these members Anormally tend to meet ifextended, consequently tit closely on the tab.

One of the other ditlicullies in the proper construction of index tabs has been that of providing sufficient room for the index character, as wellvas siil'licient gripping width without making the tab of undue width. '.lhe cutting away of the center of the conipression band at 3l makes it possible to tit the band closely against the shoulders, and at the saine time permits the use of a narrow band.

It will be noted that when the device is not in place, there will be a simili opening between the flange and the end of the lower member, thus pern'iitting the slipi'iing of the tab on the leaf, regardless of the thickness or texture thereof. This is a distinct improvement over the tabs of which I am aware, as none of them are provided with adjustable gripping means, as the meinbers of the tab itself are lat all limes, both .before and after placing on the leaf, under the saine tension, 4consequently in slipping the old form of tabs on the leaf, unless the paper is quite thick or hard, there is great danger of tearing the leaf. At the same the leaf under considerable tension in order that the tab may not slip olf the leaf after it is in place. For this reason they are more liable to be pulled olf the leaf in the ordinary handling of the book. By the use of my device` however, the members of the tab are not under tension before being placed on the leaf, and consequently can be readily placed thereon, the tension or gripping force being obtained by the use ofthe compression band after the tab is in place.

It will be readily seen that by varying the shape of the flanged end and the compres` sion band any degree of gripping force may be attained, so that the tali will be held in place even to the extent of tearing out a portion of the leaf before 1t will let go its hold. Of course, it is understood that it is not expected that` the gripping force will be so great when the paper is of a liner or softer texture, as, of course, it is not desired to have the tab tear the leaf, but the statement above is made to show the possibility of adjustingthe tab within any reasonable degree. l. further believe I am the -first to combine with a label holder or index tab formed from two members each embodying a label holding portion and a supporting portion, a movable compression device which coplatter together to hold a label between the 'label holding portions and to gripl a support by the supporting portions.

0f course other n'ioiililications of the tab may be made, but any of them that include the adjuslaliiilily of the gripping means 'or tension come within tlie\spii 'it of my invention.

I claim:

1. A label holder or index tab comprising two members each en'iboilying ay label holding portion anda supporting portion, 'and a removable compression device engaging both'o'tl the two iiieiiibei's to force them together in order to hold a label between the label holding portions and to grip a support by the supporting portions.

Q. .X label holder or index tab comprising two members connected together to swing relatively to each other and each embodying a label holding portion and a supporting poi-tion. and a compression device coperatby the supporting portions.

two members each embodying a supporting portion and a label holding portion, one of the latter being provided with an opening for the exposure of the index or label, and a removable band constituting a compression means located and engaging with both members between said portions to hold a label between the label holding portions and a support. between the supporting portions.

4. A label holder or index tab comprising a pair of gripping jaws and a pair vof label holding portions formed from a single piece ot sheet material folded on itself and provided with an index exposure opening, the fold being located on one side of the exposure opening and detachable means for holding, respectively,- both the two label holding portions and the gripping portions together located on the opposite side of the exposure opening.

3. A label holder comprising two members oach embodying a label holding portion and a 4importing portion, said members being resiliently connected together, and exl terioi'ly arranged movable compression crates with the two members to forcethe A. label holder or index tab comprising l iol l with the means cooperating with the onter faces ot" both members between the label holding portions and the suppmfting `portions to force the members together.

G. An index tab comprising an index holding means and a pair ol.1 gripping members haring portions presentiim` converging faces when pressed together1 and a compression member movable on the index holding means into and ont; of engagement with the outer converging faces of the gripping memw bers.

7. An .index 'tab comprising` a pair ot members connected by a told at one ot their ends, having converging free ends, and slionl'ders between the liree ends andthe ilold, the pair of members being formed from a single blank ol' sheet material recessed on opposite sides to provide the shoulders and bent between its ends to provide the two members. and a comlnession member adapt.- ed to fit over the folded end and coi'peratic slnndders to hold the l'rec ends againstI separation.

S. An index tab comprising two integral opposed parts each embodying a gripping member formed at one end with index holding means adapted to embrace an index member and having an opening .for the exposare of the index, one o'l" said parts having a pair of txed angular sliouldersex tended from opposite sides thereotl to aline with the marginal edge of material to which it is attached.

9. An inde t b comprising` integral gripping members Ytermed at, one end to embrace an index member and having an opening lor the exposure o'l:l the index and aty the other end with angular shoulders adapted to aline with the marginal edge of i'naterial to which it is attached and as stops .for a compression member, and a compression band `engageable over the tirst-named end and adapted to engage Isaid shoulders to compress said gripi'iing members.

10. An index tab comprising a member 'Folded upon itsell and haring alincd openin js, oppositclv disposed shoulders and gripping ends, and a compression member engageable over the said member and forming` a stop lor the material to which said tab is to be attached.

'1'1. An index tab comprising a folded member 'lor embracing an index member and having alined openings for the exposure thereot, inner shoulders adjacent the inner margins ot' said openings and laterally extended wings with converging ends, and a compression band engageable over the portion with alined openings and having portions engageable over said wings and compressing the 'l'ree ends ol` said :folded member.

lf2. An index tab comprising spring members having openings to expose an index member held therebetween and provided with two pairs ot.' oppositely disposed shoulders, and spring means for yieldingly holding said members in operative relation with each other, said holding means comprising a metallic spring clip folded on itself and having converging sides and adapted to pass over one pair ot1 shoulders and abut against the set-ond pair, thus locking said holding means in operativo position.

Signed bv me at Chicago, Illinois, this 22nd day ot OctoberY` 1U() l I EN lt Y ll. l5 U RCKHART.

Witnesses SARAH Lewis, Annnirr J. Sausnn. 

